161507452 has 6 divisors (see below), whose sum is σ = 282638048. Its totient is φ = 80753724.

The previous prime is 161507447. The next prime is 161507477. The reversal of 161507452 is 254705161.

161507452 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20188428 + ... + 20188435.

Almost surely, 2^161507452 is an apocalyptic number.

It is an amenable number.

161507452 is a deficient number, since it is larger than the sum of its proper divisors (121130596).

161507452 is a wasteful number, since it uses less digits than its factorization.

161507452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40376867 (or 40376865 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 161507452 is about 12708.5582187753. The cubic root of 161507452 is about 544.5831360429.

The spelling of 161507452 in words is "one hundred sixty-one million, five hundred seven thousand, four hundred fifty-two".